Please be advised that CME will not release support for flexible fixing date offset for overnight index swaps (OIS) in the New Release environment today as indicated in Advisory 21-330. A subsequent advisory will be published with the new release date. This interest rate swap convention is also known as a “Lookback”, where the rate for each business day in a calculation period is determined on the basis of the rate observed for a certain number of business days prior to such date. This enhancement allows the OIS floating coupon to be known ahead of the calculation period end date.
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